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[单选题]
He _______ when the teacher came in.
A.sang
B.has sung
C.was singing
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A.sang
B.has sung
C.was singing
When he was running across the field, he _________a log.
A.fell down
B.fell off
C.fell into
D.fell over
A.In
B.At
C.On
A.could
B.would
C.must
D.need
A. engage in
B. engaged to
C.engaged in
D.engage to
A.When walking
B.When walked
C.When he was walking
D.He was walking
The driver was at______loss when word came that he was forbidden to drive for speeding.
A.a;/
B.a;the
C.the;the
D./;/
He was just about to jump up when he felt something _____ near his feet.
A.to move
B.move
C.moving
D.moved